How to setup channel on droplet without running into the error Cannot import ASGI_APPLICATION module

I have been trying for the past two weeks now to host my web app on digital oceans droplet cloud server , after I had successfully uploaded all the files of my Django app to the droplet cloud server, I can’t seem to figure how to run the app without running into this exception ImproperlyConfigured: Cannot import ASGI_APPLICATION module, In my development environment every thing seems to work without any problem but when uploaded on the ubuntu droplet I keep getting the above error, I have down-grade my Django from 3.1 to 2.5.1 as a solution on stack was suggested but it didn’t work and also I tried other suggestions of importing the application in the routing file as another solution but the problem seem to persist! Am really getting stressed since it has been almost two week on trying to hunt the bug, and I have tried other methods suggested on stack ! As I mentioned that am only having this issue in my production environment. What can possible be the course ?